- Add Buffer import from node:buffer to manager.ts and types.ts
- Fix error handling type assertions (error/retryError/stdError as unknown)
- Add explicit type annotation to byte parameter in isPrintableAscii check
- All tests now passing (3 SNMP tests + 10 logger tests)
- Created deno.json configuration
- Updated all imports to use npm:net-snmp@3.20.0
- Changed all Node.js built-in imports to node: specifiers
- Updated all .js extensions to .ts in imports
- Created mod.ts as Deno entry point
- Ready for Phase 3: CLI simplification
